Vise.



No. 825,151. PATENTED JULY 3, 1906.

J. P. MoLEAN. VISE.

APPLICATION FILED MAR. 3, 1906.

I 6 7- E- J6I 14 If A i llsi ii l lslmij BY how/"6a ATTORNEYS JAMESFRANCIS McLEAN, OF MONTREAL, CANADA.

VISE.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed March 3,1906. Serial 1:10. 303,977.

To (tZZ 'IUII/O'H'I/ it nuty concern:

Be it known that I, JAMES FRANCIS MOLEAN, a subject of the King of GreatBritain, and a resident of Montreal, in the Province of Quebee andDominion of Canada, have invented new and Improved Vise, of which thefollowing is a full, clear, and exact description.

My invention relates to improvements in vises, particularly vises of thequick-acting type, in which a pair of jaws are arranged to be freely andquickly closed onto an object, after which they are moved to closerengagement with said object by means of a screw or other mechanicaldevice.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all thefigures.

Figure 1 is a sectional view of my improved vise, taken on the line 1 1of Fig. 2. Fig. 2 is a plan view of the vise. Fig. 3 is a section takenon the line 3 3 of Fig. 2. Fig. 4 is a view similar to Fig. 3, butshowing the parts in different position; and Fig. 5 is a sectional viewsimilar to Fig. 1, but showing only a portion of my vise and in aslightly-modified form.

Referring to the drawings, the aws of my vise are indicated at 6 and 7,the aw 6 being preferably fixed to or forming a part of a work-bench orthe like. Projecting from the gripping-face of the j aw 6 are apair ofparallel rods 8. These rods are firmly fastened to the fixed aw, andtheir outer ends are attached to and braced by a cross-piece 9. Themovable jaw 7 is mounted to slide on the rods 8. A feed-screw 10,passing through an opening in the jaw 7, is journaled near its outer endin the cross-piece 9 and at its inner end in a plate 1 1, countersunk inthe grippingface of the jaw 6. The extreme inner end of the screw 10projects into a recess in the fixed jaw and is formed with a head 12,which serves to prevent axial movement of the screw without hinderingrotary movement thereof. At the outer end of the screw 10 a handle 13 isapplied. The movable jaw 7 is formed with an extension 14, in which is achamber adapted to receive a half-nut 15. The half-nut 15 is normallypressed into engagement with the screw by a spring 16, so that when thescrew is turned the aw 7 will be fed toward or from the fixed jaw 6.Midway of the length of the half-nut 1.5 a recess is formed to receive acam 17, mounted on the screw 10. Said screw is formed with a flattenedface at one side, and said cam is formed with a corresponding flattenedeye, so that when the screw is turned the cam will rotate with it, andyet the cam will be free to slide axially on the screw. The cam 17 isformed with a swell at one side, adapted to engage the half-nut 14 andlift it clear of the screw 16 when turned to the position inclicated inFig. 4. In this manner the aw 7 is released from engagement with thescrew 10 and may be moved to any desired position thereon, after whichthe screw may be turned sufficiently for the cam-swell to clear thehalf-nut, whereupon the half-nut will engage the screw, and then furtherrotary movement of the screw will tend to move the jaw 7 toward or fromthe jaw 6. In Fig. 5 a slight modification of this construction isshown. The jaw 7 is provided with a half-nut 18, which is recessed ateach end to receive a pair of cams 19. The cams 19 are similar in formto the cam 16 and are mounted to slide upon and rotate with the shaft10. The action of these cams is similar to that of the cam 16, theirpurpose being to raise the nut 18 clear of the screw 10, as shown inFig.5, permitting the jaw 7 to bemoved by hand against the work that isto be gripped. Thereafter the screw may be turned to move the cam-swellsof the earns 19 out of engagement with the half-nut 18, when the latterwill be moved into engagement with the screw by action of the spring 15,and the jaw 7 may then be forced into closer engagement with the workbyfurther turning the screw 10.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a vise, the combination of a relatively fixedjaw, a relatively movable jaw, a nut connected with said movable jaw, arotatable screw adapted to engage said nut, and a cam mounted to rotatewith said screw but free to slide axially thereon, said cam serving tomove said nut out of engagement with said screw during a part of eachrotation of said screw.

2. In a vise, the combination of a relatively fixed jaw, a relativelymovable jaw, a nut connected with said movable jaw, a rotatable screw, aspring adapted to press said nut into engagement with said screw, saidscrew serving to move said movable aw toward and from said fixed jaw,and a cam mounted to rotate with said screw but free to slide axiallythereon, said cam serving to move said nut out of engagement with saidscrew during a part of each rotation of said screw.

3. In a vise, the combination of a relatively fixed jaw, a plurality ofrods extending from said fixed jaw, a relatively movable jaw mounted toslide on said rods toward and from said fixed jaw, a half-nut connectedwith said movable jaw, a rotatable screw, a spring adapted to press saidhalf-nut into engagement with said screw, said screw serving to movesaid movable jaw toward and from said fixed aw, and a cam mounted torotate with said screw but free to slide axially thereon, said camserving to move said half-nut out of engagement with said screw during apart of each rotation of said screw.

4. In a vise, the combination of a relatively fixed aw, a relativelymovable aw, a toothed member connected with said movable jaw, arotatable screw adapted to engage said toothed member and a cam mountedto rotate with said screw but free to slide axially thereon, said camserving to move said toothed member out of engagement with 0 said screwduring a part of each rotation of said screw.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES FRANCIS MoLEAN.

I/Vitnesses:

M. DIPLOOK, LEON L. ESPERANCE.

